.pf-hero { position: relative; padding: clamp(36px, 5vw, 72px) 0 clamp(48px, 6vw, 84px); overflow: hidden; }
.pf-hero::before { content: ""; position: absolute; inset: -30% -10% auto auto; width: 60vw; height: 60vw; max-width: 820px; max-height: 820px; background: radial-gradient(closest-side, rgba(14, 191, 216, .14), transparent 70%); pointer-events: none; }
.pf-hero::after { content: ""; position: absolute; inset: auto auto -40% -15%; width: 55vw; height: 55vw; max-width: 700px; max-height: 700px; background: radial-gradient(closest-side, rgba(91, 54, 192, .1), transparent 70%); pointer-events: none; }
.pf-hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .92fr 1.08fr; gap: clamp(28px, 4vw, 56px); align-items: center; }
.pf-hero h1 { font-size: clamp(2.2rem, 4.4vw, 3.5rem); margin-bottom: .4em; }
.pf-hero .lead { margin-bottom: 1.6rem; }
.pf-hero-visual img, .pf-figure img { width: 100%; height: auto; }
.pf-tight { padding: clamp(40px, 5vw, 64px) 0; }
@media (min-width: 1061px) { .pf-kind-laptop img { width: 114%; max-width: none; margin-left: -7%; } }
.pf-kind-tablet img, .pf-kind-portrait img { max-width: 440px; margin: 0 auto; }
.pf-kind-phone img { max-width: 300px; margin: 0 auto; border-radius: 28px; border: 1px solid var(--line); box-shadow: var(--shadow-lg); }
.pf-kind-shot img, .pf-kind-frame img { border-radius: 16px; border: 1px solid var(--line); box-shadow: var(--shadow-lg); background: #fff; }
.pf-kind-photo img { border-radius: 24px; box-shadow: var(--shadow-lg); aspect-ratio: 4 / 3; object-fit: cover; }

.pf-subnav { position: sticky; top: 76px; z-index: 40; background: rgba(255, 255, 255, .94); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pf-subnav ul { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 2px; padding: 10px 0; }
.pf-subnav a { display: inline-flex; align-items: center; gap: 6px; padding: 8px 9px; border-radius: 999px; font: 600 .84rem/1 var(--sans); color: var(--ink); border: 1px solid transparent; }
.pf-subnav a:hover { background: var(--violet-50); color: var(--violet); }
.pf-subnav a.is-current { background: var(--violet); color: #fff; }
.pf-subnav svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }

.pf-position { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pf-position p { margin: 0 auto; max-width: 900px; padding: 26px 0; text-align: center; font-size: 1.05rem; color: var(--text); }
.pf-position strong { color: var(--plum); }

.pf-feats { display: grid; gap: 20px; }
.pf-feats.cols-3 { grid-template-columns: repeat(3, 1fr); }
.pf-feats.cols-2 { grid-template-columns: repeat(2, 1fr); }
.pf-feats.cols-4 { grid-template-columns: repeat(4, 1fr); }
.pf-feat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column; }
.pf-feat h3 { font-size: 1.22rem; margin-bottom: .35em; }
.pf-feat > p { font-size: .95rem; color: var(--muted); margin: 0 0 12px; }
.pf-feat-icon { width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center; background: var(--violet-50); margin-bottom: 16px; }
.pf-feat-icon svg { width: 23px; height: 23px; stroke: var(--violet); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.pf-kb { margin: auto 0 0 !important; display: flex; flex-direction: column; gap: 4px; padding-top: 10px; border-top: 1px dashed var(--line); }
.pf-kb a { font-size: .84rem; font-weight: 600; color: var(--violet); display: inline-flex; gap: 6px; align-items: flex-start; line-height: 1.4; }
.pf-kb a::before { content: ""; flex: none; width: 14px; height: 14px; margin-top: 2px; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235b36c0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 4h6a3 3 0 013 3v13a2 2 0 00-2-2H4zM20 4h-6a3 3 0 00-3 3'/%3E%3Cpath d='M20 4v14h-7'/%3E%3C/svg%3E") center/14px no-repeat; }
.pf-kb a:hover { text-decoration: underline; }
.pf-kb-inline { border-top: 0; padding-top: 0; margin: 0 0 8px !important; }
.pf-kb-inline span { font: 700 .74rem/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }

.pf-figure { margin: 0; }
.pf-figure figcaption { margin-top: 14px; text-align: center; font-size: .86rem; color: var(--muted); }

.pf-help { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.pf-help-card { display: flex; flex-direction: column; gap: 6px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; color: var(--text); transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
.pf-help-card:hover { border-color: var(--violet-100); box-shadow: var(--shadow); transform: translateY(-2px); color: var(--text); }
.pf-help-cat { font: 700 .7rem/1.2 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--teal-600); }
.pf-help-card strong { color: var(--plum); font-size: 1.02rem; line-height: 1.3; }
.pf-help-lead { font-size: .87rem; color: var(--muted); line-height: 1.5; }
.pf-help-card em { font-style: normal; margin-top: auto; padding-top: 8px; font-weight: 700; font-size: .86rem; color: var(--violet); }

.pf-next { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.pf-next-card { display: flex; gap: 16px; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; color: var(--text); transition: border-color .2s ease, box-shadow .2s ease; }
.pf-next-card:hover { border-color: var(--violet-100); box-shadow: var(--shadow); color: var(--text); }
.pf-next-card .pillar-icon { flex: none; width: 44px; height: 44px; border-radius: 13px; margin: 0; }
.pf-next-card .pillar-icon svg { width: 22px; height: 22px; }
.pf-next-card strong { display: block; font-family: var(--serif); font-size: 1.15rem; color: var(--plum); }
.pf-next-card span { display: block; font-size: .88rem; color: var(--muted); line-height: 1.45; margin-top: 2px; }

.pf-cta-sec { padding-top: 0; }
.cta-band .pf-mail { margin-top: 6px; font-weight: 600; opacity: .92; }

.pf-hubwrap { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 70px); align-items: center; }
.pf-hub { width: 100%; max-width: 560px; margin: 0 auto; }
.pf-hub .hub-c1 { font: 700 30px var(--serif); fill: #fff; }
.pf-hub .hub-c2 { font: 500 17px var(--sans); fill: rgba(255, 255, 255, .92); }
.pf-hub .hub-n1 { font: 700 19px var(--sans); fill: #403450; }
.pf-hub .hub-n2 { font: 500 14px var(--sans); fill: #6b6680; }

.pf-flowdiag { background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: clamp(14px, 3vw, 30px); box-shadow: var(--shadow-sm); }
.pf-flowdiag svg { width: 100%; height: auto; }
.pf-flowdiag .fl-t { font: 700 17px var(--sans); }
.pf-flowdiag .fl-s { font: 500 13px var(--sans); }
.pf-flowdiag .fl-u { font: 600 13px var(--sans); fill: #0a7f91; }
.pf-flow-tall { display: none !important; max-width: 400px; margin: 0 auto; }
.pf-flow-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 24px; margin-top: 18px; font-size: .88rem; color: var(--muted); }
.pf-flow-legend span { display: inline-flex; align-items: center; gap: 8px; }
.pf-flow-legend i { width: 14px; height: 14px; border-radius: 4px; display: inline-block; }

.pf-modules { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.pf-mod { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.pf-mod h3 { font-size: 1.1rem; margin-bottom: .6em; display: flex; align-items: center; gap: 10px; }
.pf-mod h3 svg { width: 20px; height: 20px; stroke: var(--violet); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.pf-mod .chips { margin: 0; }

.pf-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: st; }
.pf-step { position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 24px 24px; }
.pf-step::before { counter-increment: st; content: counter(st, decimal-leading-zero); display: block; font: 800 .8rem/1 var(--sans); letter-spacing: .14em; color: var(--violet); margin-bottom: 12px; }
.pf-step h3 { font-size: 1.2rem; margin-bottom: .35em; }
.pf-step p { font-size: .94rem; color: var(--muted); margin: 0; }

.pf-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pf-gal { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.pf-gal .pf-gal-img { aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-soft); border-bottom: 1px solid var(--line); }
.pf-gal .pf-gal-img img { width: 100%; height: 100%; object-fit: cover; object-position: top left; }
.pf-gal figcaption { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.pf-gal figcaption strong { color: var(--plum); font-size: 1.02rem; }
.pf-gal figcaption span { font-size: .9rem; color: var(--muted); line-height: 1.5; }
.pf-gal figcaption a { margin-top: auto; padding-top: 8px; font-weight: 700; font-size: .88rem; }

.pf-phones { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; align-items: start; }
.pf-phone { margin: 0; text-align: center; }
.pf-phone .pf-phone-img { border-radius: 26px; overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); aspect-ratio: 9 / 16; background: #fff; max-width: 260px; margin: 0 auto; }
.pf-phone img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.pf-phone figcaption { margin-top: 12px; font-size: .88rem; color: var(--muted); }
.pf-phone figcaption strong { display: block; color: var(--plum); font-size: .98rem; }

.pf-note { display: flex; gap: 14px; align-items: flex-start; background: var(--teal-50); border: 1px solid #bfeef5; border-radius: var(--radius); padding: 18px 20px; max-width: 860px; margin: 28px auto 0; font-size: .95rem; }
.pf-note svg { width: 22px; height: 22px; flex: none; stroke: var(--teal-600); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; margin-top: 2px; }
.pf-note p { margin: 0; }
.pf-note strong { color: var(--plum); }

.pf-compare { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.pf-compare > div { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px; }
.pf-compare h3 { font-size: 1.4rem; }
.pf-compare ul { display: grid; gap: 10px; margin-top: 14px; }
.pf-compare li { display: flex; gap: 10px; font-size: .96rem; }
.pf-compare li::before { content: ""; flex: none; width: 20px; height: 20px; margin-top: 2px; border-radius: 50%; background: var(--violet-50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.3l2.2 2.2 4.8-5' fill='none' stroke='%235b36c0' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat; }
.pf-compare .feature-box { background: var(--grad-violet); color: #eae3fb; border: 0; box-shadow: var(--shadow-lg); }
.pf-compare .feature-box h3 { color: #fff; }
.pf-compare .feature-box li::before { background-color: rgba(255, 255, 255, .2); background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.3l2.2 2.2 4.8-5' fill='none' stroke='%23ffffff' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); }

.pf-code { background: #fbfaff; border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; font: 500 .84rem/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--plum); overflow-x: auto; white-space: pre; box-shadow: var(--shadow-sm); }
.pf-code .k { color: var(--violet); font-weight: 700; }
.pf-code .s { color: #0a7f91; }
.pf-code .c { color: var(--muted); }

.pf-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.pf-table { width: 100%; border-collapse: collapse; font-size: .93rem; }
.pf-table th, .pf-table td { text-align: left; padding: 13px 16px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.pf-table th { font: 700 .76rem/1.2 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); background: var(--bg-soft); white-space: nowrap; }
.pf-table td:first-child { font-weight: 700; color: var(--plum); white-space: nowrap; }
.pf-table tr:last-child td { border-bottom: 0; }

.pf-stat-row { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; overflow: hidden; }
.pf-stat-row .proof-item { border-left: 1px solid var(--line); }
.pf-stat-row .proof-item:first-child { border-left: 0; }

@media (max-width: 1060px) {
  .pf-subnav { top: 68px; }
  .pf-hero-grid, .pf-hubwrap { grid-template-columns: 1fr; }
  .pf-hero-visual { max-width: 680px; margin: 0 auto; width: 100%; }
  .pf-feats.cols-3, .pf-feats.cols-4, .pf-help, .pf-next, .pf-gallery { grid-template-columns: repeat(2, 1fr); }
  .pf-modules, .pf-steps, .pf-phones { grid-template-columns: repeat(2, 1fr); }
  .pf-stat-row { grid-template-columns: repeat(2, 1fr); }
  .pf-stat-row .proof-item:nth-child(3) { border-left: 0; }
  .pf-stat-row .proof-item:nth-child(n+3) { border-top: 1px solid var(--line); }
}
@media (max-width: 760px) {
  .pf-flow-wide { display: none !important; }
  .pf-flow-tall { display: block !important; }
}
@media (max-width: 640px) {
  .pf-subnav { position: static; }
  .pf-subnav ul { gap: 6px; }
  .pf-subnav a { padding: 7px 10px; font-size: .8rem; border-color: var(--line); }
  .pf-feats.cols-2, .pf-feats.cols-3, .pf-feats.cols-4, .pf-help, .pf-next, .pf-gallery, .pf-modules, .pf-steps, .pf-compare { grid-template-columns: 1fr; }
  .pf-phones { grid-template-columns: 1fr 1fr; gap: 14px; }
  .pf-feat { padding: 22px; }
  .pf-table td:first-child { white-space: normal; }
}

.pf-brief { background: #fff; border: 1px solid var(--line); border-radius: 22px; box-shadow: var(--shadow-lg); padding: 10px 24px; }
.pf-brief-row { display: flex; gap: 16px; align-items: flex-start; padding: 18px 0; border-bottom: 1px solid var(--line-soft); }
.pf-brief-row:last-child { border-bottom: 0; }
.pf-brief-n { flex: none; width: 36px; height: 36px; border-radius: 12px; display: grid; place-items: center; background: var(--grad-brand); color: #fff; font: 800 1rem/1 var(--sans); }
.pf-brief-row strong { display: block; color: var(--plum); font-size: 1.05rem; }
.pf-brief-row span { display: block; color: var(--muted); font-size: .94rem; }
.pf-hero-grid > *, .split > *, .pf-hubwrap > * { min-width: 0; }
.pf-kind-code .pf-code { font-size: .88rem; padding: 26px 28px; box-shadow: var(--shadow-lg); border-radius: 20px; }
@media (max-width: 640px) { .pf-kind-code .pf-code { font-size: .74rem; padding: 18px; } }
.pf-stack { max-width: 980px; margin: 0 auto; display: grid; gap: 14px; }
.pf-stack-row { border-radius: 18px; padding: 22px 26px; text-align: center; }
.pf-stack-row strong { display: block; font-family: var(--serif); font-size: 1.35rem; }
.pf-stack-row span { display: block; font-size: .95rem; margin-top: 4px; }
.pf-stack-config { background: #fff; border: 2px dashed #c9bdf0; color: var(--text); }
.pf-stack-config strong { color: var(--plum); }
.pf-stack-base { background: var(--grad-violet); color: #eee8fd; box-shadow: var(--shadow-lg); }
.pf-stack-base strong { color: #fff; }
.pf-stack-quad { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.pf-stack-quad > div { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px 16px; text-align: center; box-shadow: var(--shadow-sm); }
.pf-stack-quad svg { width: 28px; height: 28px; margin: 0 auto 10px; stroke: var(--violet); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.pf-stack-quad strong { display: block; color: var(--plum); font-size: 1rem; }
.pf-stack-quad span { display: block; color: var(--muted); font-size: .86rem; }
@media (max-width: 760px) { .pf-stack-quad { grid-template-columns: 1fr 1fr; } }